Caption - "Transporting material for flume construction by turning water into the completed upper end of flume. Material is taken two miles. Black Hills National Forest, South Dakota." Duplicate and adjacent photographs have conflicting dates: 1920...

Print copy of a speech on history and conservation of national forests, written and given by Black Hills National Forest Supervisor George Duthie at Spearfish, 1925. The date the text was created is unspecified.